Bosch ES025 Installation And Maintenance Manual page 13

ES Series
• L.E.D. FAULT INDICATION: Two L.E.D.
indicators are provided:
Green: Power L.E.D. indicates 18-30 VAC
present on board.
Red: Fault indicator with the following blink
codes;
1 - High Pressure Lockout
2 - Low Pressure Lockout
3 - Freeze Sensor Lockout
4 - Condensate Overflow
5 - Brownout
• INTELLIGENT RESET: If a fault condition is
initiated, the 5 minute delay on break time
period is initiated and the unit will restart after
these delays expire. During this period the
fault LED will indicate the cause of the fault. If
the fault condition still exists or occurs 2 or 4
times (depending on 2 or 4 setting for Lockout
dip switch) before 60 minutes, the unit will go
into a hard lockout and requires a manual
lockout reset. A single condensate overflow
fault will cause the unit to go into a hard
lockout immediately, and will require a manual
lockout reset.
• LOCKOUT RESET: A hard lockout can be reset
by turning the unit thermostat off and then
back on when the "RESET" dip switch is set to
"Y" or by shutting off unit power at the circuit
breaker when the "RESET" dip switch is set to
"R".
The blower motor will remain active during a
lockout condition.
NOTE: Always check incoming line
voltage power supply and secondary
control voltage for adequacy
ES Series
Safety Devices and the UPM Controller | 13
T111970291 (2015/01)